Attachment for line-casting machines



July' 3, 1923.

1.460.445 L. A. ROBINSON ATTACHMENT FOR LINE CASTING MACHINES Filed Nov. '7, 1921 3 Sheets-Sheet l I N V EN TOR. Zea/2 if? Fad/ 750,

A TTORNEY.

July '3; 1923.

' L. A. ROBINSON ATTORNEY.

July 3, 1923. 1,460,445

L.A.ROHNSON ATTACHMENT FOR LINE CASTING MACHINES Filed Nov. '7, 1921 3 Sheets-Sheet 5 INVENTOR.

Z 60771? Fab/773017,

ATTORNEY.

known, to prevent the casting of a line when such line is too short; that is to say, when the matrices and spaces do not constitute a full line. But the means employed does not prevent the operation of the pump when the mold and matrices are not in proper register, i. e.,' when the toes of the matrices are not seated snugly into the groove or grooves of the mold.

Quite often, for one reason or another, the so-called first elevator, after the line of matrices and spaces has been sent into it, does not descend its full distance or to the proper casting position. The result is that the toes of the matrices do not lie opposite the groove or grooves in the mold and m the succeeding closing-up movement of the mold they cannot enter such groove or grooves, the mold being held away from the matrices thereby, leaving a space through which the metal may be forced, resulting in a squirt, the metal being thrown over and through the working parts of the machine and between the matrices and much time is lost in cleaning the ma chine.

The operator cannot be apprised of these impending difficulties except by either keeping a practiced eye upon the elevator to see that it is in proper position, or by constantly attempting to discern by unfamiliar sounds the improper action of the parts which, of course, takes his attention more or less, from his key-board.

One of the purposes of my invention in View of the above, is to provide and so place the release mechanism for the pump that instead of being operated in sequence with the movement of the mold toward the matrices, it will be operated to release the pump when and as the fitting or nesting or seating of the mold and matrices become perfect, thus eliminating entirely the described difficulties.

In the figures, 1 and 2 represent parts of certain frame-portions of a line casting machine, and 3 is the so-called firstelevator usually guided by and movable with respect to the said portion 2, and having the usual elevator jaws 3.

The usual mold is designated at 4:, while 5 is the mold-wheel.

Rearward of the mold-wheel is the pivotally mounted metalpot 6 adapted to be tilted toward the mold-wheel as in common practice, combined with which is the customary plunger or pump 7 with which is connected a lever 8 pivoted on an arm 9, for example, of the frame-portion 1, operated both by a cam 10 and a spring 11, while 12 is the cam for carrying the metalpot 6 toward the mold-wheel 5.

Thus far described, the machine conforms substantially to those now in use, no claim being made thereto per se, though other parts thereof will be referred to herein in order to better explain the disposal of those parts included in my invention and their operations in connection therewith.

A bracket 13 secured to the frame portion 1 carries an arm 14c upon which is pivoted at 15 a bell-crank lever 16, one arm of which is designed to lie beneath a depending extension 17 and the lever 8 previously referred to, all of which is likewise in common use, said lever 16 holding said lever 8 raised and normally preventing the spring 11 from depressing it for the operation of the plunger 7, a spring 18 being provided to elastically hold the lever 16 in its position beneath said extension 17. Pivoted onsaid arm 14 at 19 is a lever 20, to engage the other arm of the lever 16, and pivoted to part of said lever 20 is a two-piece rod 21 guided in an arm 22 on a stud 23, for example, of the arm 14:, a thumbscrew 24: being employed to secure said arm 22 in any desired adjustment, such adjustment being merely for the purpose of properly positioning the rod 21 with respect to other parts to be described, but any other securing means may be used in place of that described. r

A turn-buckle 25 or other desired means is carried by the two parts of the rod 21 by which to adjust such parts relatively for a greater or less length, said rod extending in the direction of the right-hand vise-jaw 26; see particularly Figures 9 and 10. The other vise-jaw is indicated at 26 in Figure 2.

The said jaw 26 is customarily mounted slidably upon the frame portion 2, the mounting therefore being unnecessary to describe, since well known. It has a recess 27 in that side thereof lying adjacent the said frame portion 2, partially within which lies a support 28. As shown in Figure 6 this support is of'U form, by preference, the yoke portion thereof being secured to the said frame portion 2 by screws 29, for example, the extensions projecting toward said jaw. Pivoted at its lower end between the extensions near the lower end of said sup-: port is what may be termed a finger 30, there being a bail 31'freely suspended from the support, there also being a pin 32 extending through the latter which may carry both the bail and the finger pivotally, as shown.

One end of a spring 33 is secured to the bail and the other end thereofextends up wardy between the support and said finger 30 adapted at times to bear against the latter.

Mounted pivotally upon the top of one of the extensions of the support is an L- shaped trigger 34, one of the arms 34 of which lies partially across the recess between Jlu the said extensions adapted at times to have proper or normal position, Figure 7, so that the moldand matr ces can properly-register and 10, lies behind a part 26? of the jaw 26,

'ascrew therein adapted to engage the same and in turn to be engaged by said jaw. The same is adjustable within the arm and is secured by a l0ck-nut 36. s

A spring 37, preferably stronger than the spring 33, is secured at one end ,to the bail 31. end and terminates behind the trigger as most clearly shown in Figure 10. Attached to the bail is a pin 38 upon which is threaded a sleeve 39 secured by a lock-nut 40, said sleeve extending through a hole 40 in the jaw 26 in the direction of and adapted, under certain conditions, to receive contact of a portion of the mold-wheel 5, Figures 9 and 10, the finger 30 adapted also, under certain conditions,to operate the rod 21, as

will appear presently.

In Figure 7 one of a series of matrices 41 is shown in position between the grooved mold and the correspondingly grooved-elevator jaw in ideal casting position, the moldwheel, metal-pot and the elevator 3. carrying the matrices; lying in-proper position'for casting a line.

In Figure 8, however, the elevator has not descended to the normalline casting position which may be due toone of several causes not necessary to mention, and, in consequence, the toes 42 of the matrices cannot enter the groove 43-of the mold. Now, since a-gap is thus left between the matrices and the mold equal in width to the lengthpof the toe 4:2, the metal if flowing wouldbe free to squirt from said; gap since unconfined. y

In order to fully understand my invention and its advantages it'is to be remembered that the pump releasing mechanism iswnot to be released by the machineinthe usual: operation following the sending in of a 'line.

and the casting thereof, but must be released when and as the mold has moved up to its exact seating position as explained.

That is to say, referringto Figures 9 and 10, it; is seen that the pump-release mechanism extends between the usual lever 16, or.

its equivalent, and'the finger 30-of the support 28, the rod 21 normally-having but slight contact with said finger, Also, it is to he observed, that the sleeve39 of the bail 31 lies in position to be engaged by,

the mold-wheel,

Now, the elevator 3 having descended to its the mold wheel in its subsequent movement to carry Said mold metal-tigl1tuponthematT 5 rices will-strike the said sleeve 39. But his fil l Qt ccur. if the toes of the matrices prevent the full movement of the parts, see

Figure 8. v.

The normal position of thetrigge-r 34 issubtantially as shown n igure 5., h scrw3a It extends upwardly at its other i -it rm 3.4 lying against the part26? .01" y position to the trigger during v ustific atio-nt,

whereupon the finger 30 is released by-the said arm 34'. been under tension against the saidfinger, due to the movement of the bail 31 and its sleeve now causes said finger to exert pres sure upon the rod Ql and shifts it to remove the lever 16 from beneath the arm 8 permitting the spring 11 to operate the pump.

A perfect line or slug is now cast, since the nesting of the matrices and mold is perfect.

Ina succeeding operation if this proper nesting or seating does not take place: andthese parts cannot ,come'together, the mold'wheelcannot advance far enough to reach and The spring 33, which has i be ,nofiow of metal under such .Ci-IZQ IID- stances.

The construction of the device 9f; myinventions may be varied,-of course, without departing from the spirit and intent of the invention, and I" do 'notconfine myself to employin'g the; m einen of the mold-wheel, and its pressure upon the sleeve 3 9-since' pressure of some memberother than thesaid moldswheel may/perform the same service Preferably the said sleeve39 and the screw 35 of the arm 34?, areadjustable in rto permit, h m to conform. o 9.011. 11:

tions that may existin any'given nachine,

which is likewisetrue of the two partied-21, Vhile the device can be made ?to release the pump after h o d andin tric s properly a in perf ct e a t ng-posi iomfl -i p abl of oursathmngh h a ioniof placed upon itfat such times as is commonly r the case; Disastrous results often attend e ac f fo ng a f l, l n betwe the j s Whe pne of thems las cally on-' e My st cture p o id fQ n; 1-; tirely free, o b e j w r one ha ing ina restraint placed u'ponvitd-uring the time of nt ced helin st c p re 'eing- .5, nly w h lin ha tak nafi dposition pp to sa l by e-mean desc ibed between the two jaws.

Having described the invention, A line ca t g" machine inolu ing iinf ombination; With EL,- .ts meldmheel and aa freely movable vise-j aw, a part engaged and moved by the mold wheel, and a second part operated by the first said part adapted to elastically engage and operate said jaw for closing it elastically upon a line of matrices.

2. A line casting machine including in combination with its mold-wheel and a freely movable jaw, a support secured on the frame of the machine, a part mounted on the support adapted for pivotal movement and to be engaged and moved by the said mold wheel, a second part pivoted on the support adapted to engage the jaw, and

1 elastic means interposed between the parts operated by the first named part through which to transmit movement to the said second part.

3. A line casting machine including in combination with its mold wheel adapted I vise-j aw through said parts from said moldwheel.

4:. A line casting machine including in combination with its mold wheel adapted for movement laterally, a freely movable vise-jaw, and pump releasing mechanism, a part pivotally mounted adapted to receive pressure of the mold wheel in the lateral movement thereof, a second part pivotally mounted adapted to engage the vise-jaw, means interposed between the two parts for imparting pressure elastically from one to the other, a third part also pivotally mounted, elastic means operated by the first named part for moving the third part, and an operating mechanism interposed between said third'part and said pump releasing mechanism.

5. In a line castin machine including a pump and pump re easing means, a normally freely movable vise-jaw, and a machine part having a given movement when a line is to be cast, in combination with mechanism interposed between the jaw and said part including a lever and means to move the same elastically in the direction of the jaw, a finger, elastic means on said mechanism adapted to bear upon the finger, and operating means interposed between the finger and the pump releasing means, the parts being arranged whereby pressure of the machine part upon said mechanism will move the lever elastically against the jaw and in the path of the finger and elastically hold the latter against the lever.

6. In a line casting machine, the combination with a pump releasing means, a visejaw and a machine part adapted to have a given movement when a line is to be cast, of mechanism mounted on the machine operated by the said machine part to move it against the said jaw for closing up a line from which a cast is to be made, means to operate the pump releasing means, and a finger operated by said mechanism to operate said means, the several parts being ar-' ranged and adapted to coact whereby in a single movement of said machine part said jaw is operated followed by the operation of said finger to release the pump.

7. The combination with the pump releasing means and the mold-wheel of a machine of the class described, of mechanism atone end engaging said means and at its other end lying in the path of movement ofsaid mold-wheel, adapted to be operated to release the pump when and as the said moldwheel completes its full movement in the seating of the mold upon the matrices.

8. The combination with the pump releasing means, and the moldwheel in a machine of the class described, of mechanism to engage and operate said means engaged by the said mold-wheel when and as the latter completes its full movement to line casting position, to release the pump.

9. The combination with the pump releasing means, andthe mold-wheel in a machine of the class described, of a lever mechanism mounted in the path of the mold-wheel en-- gaged thereby in its movement, and mechanism lying between the said lever mechanism and said means operatively engaging the said means and in position to be engaged by the said lever mechanism.

10. The combination with the pump releasing means and the mold-Wheel in a machine of the class described, of a lever mechanism mounted on the machine adapted to be engaged by the mold-wheel when and as it completes its full movement to the line casting position, and mechanism interposed between the said means and the said lever mechanism adapted to be engaged and operated by the latter to operate said means and release the pump.

11. The combination with the pump releasing means, the mold-wheel, and a movable vise-jaw in a machine of the class described, of a lever mechanism mounted on the machine including a part to engage the III of a mechanism mounted on the machine including a part adapted to'be engaged by the mold-wheel when and as that member moves to its proper seating position for easting a line, a lever operated by said part to engage and shift the said jaw, a third mem ber controlled by the lever and released thereby in the return movement of the aw, and mechanism lying between the said third part and the said releasing means operated.

by the former to move the latter for releasing the pump.

18. The combination with the pump releasing means, mold-Wheel, and a movable vise-jaw of a machine of the class described, of mechanism in position to operatively engage the said means to release the pump, a part to receive pressure of and to be held in an extreme position by the mold-wheel as the latter reaches its extreme position for casting a line, a lever to engage the said jaw, a part operated by the first said part to apply elastic pressure to the lever to move the said aw therethrough, a finger in position to engage the said mechanism but'held from such engagement by said lever, and an elastic member operated by the said first named part to operate said finger to enga e and operate the mechanism to release t e pump when and as the said jaw in its return movement removes the lever from con-V tact with said finger.

i 14. Mechanism for use in the operation of i .a pump releasing means in a machine of the class described, including in its construction a support, a bail pivoted thereto, a trigger pivoted on said support, a part secured to the member to elastically engage the trigger,

a finger pivoted .on the support in position to be engagedby the trigger, and an elastic member secured on the said member and positioned to engage the finger.

' l5. Mechanism for use 1n the operation of a pump releasing means in a machine of the class described, including in 1ts construction a support, a bail pivoted thereto, a trigger pivoted on said support, a part secured to the member to elastically engage the trigger, a finger pivoted on the support 1n position to be engaged by the trigger,a member secured on the said member and posi-' tioned to elastically engage the finger, and an operating part interposed between said finger and said releasing means.

In testimony whereof I affix my signature in presence of two witnesses. LEON A. ROBINSON. Witnesses: a

J. H. KINGSBURY, L. M. THURLOW. 

